Dye solution circulating pump



Sept. 14, 1965 DAllCHl ASA] 3,205,687

DYE SOLUTION CIRCULATING PUMP Filed Feb. 19, 1965 5 Sheets-Sheet 1 r 0 I \11 ll 31 1&

DMAAfiA/ V l0 INVENTOR. 10 5 BY m W Sept. 14, 1965 DAllCHl-ASAI 3,205,687

DYE SOLUTION CIRCULATING PUMP Filed Feb. 19, 1965 3 Sheets-Sheet 2 Sept. 14, 1965 DAllCHl AsAl DYE SOLUTION CIRCULATING PUMP 5 Sheets-Sheet 3 Filed Feb. 19, 1965 Dado/L ASA! INVENTOR.

BY WWW W United States Patent 3,205,687 DYE SOLUTION CIRCULATING PUMP Daiichi Asai, 34 Aoi-cho, Higashi-ku, Nagoya-ski, Aichi-Prefecture, Japan Filed Feb. 19, 1963, Ser. No. 259,543 Claims. (Cl. 68188) The present invention relates to a dye solution circulating pump.

One object of this invention is to supply a dye solution circulating pump wherein the pumping chamber, i.e the propellers and the casing thereof, is made smaller, and whereby the stagnation of the dye solution in the pumping chamber and in the dye solution chamber is prevented.

Another object of this invention is to supply a dye solution circulating pump wherein the dye solution is circulated smoothly without having the speed of rotation of the propeller thereof too high and whereby the generation of eddy currents therein, the entanglement of dyed yarn, and the uneven dyeing of the yarn are avoidable.

Still another object of this invention is to supply a dye solution circulating pump wherein a proper quantity of the dye solution is employed i.e. without employing any surplus quantity of the dye solution and whereby the predetermined object of dyeing is achievable.

Still another object of this invention is supply a dye solution circulating pump wherein propellers are mounted in a plurality on one shaft and whereby the circulation of the dye solution is facilitated and thereby dyeing efliciency is promoted and as a result thereof the propellers and the casing thereof are made smaller.

Still a further object of this invention is to supply a dye solution circulating pump wherein the bath ratio of the dye solution is controlled corresponding to the quantity of the dyed material and whereby respective required quantities of water, dye, and fuel are economized and thereby dyeing cost is reducible.

Still a further object of this invention is to supply a dye solution circulating pump wherein substantially no thrust bearing is made necessary, and in consequence the construction of bearings of the pump is simplified.

Still a further object of this invention is to supply a dye solution circulating pump wherein the gap between the propellers and the casing thereof is maintained at a minimum and whereby the function of the pump is effected at a high efiiciency.

In consideration of said objects and other objects that will be described hereinbelow, the arrangement of the parts thereof is described in the following specification and is stated in the accompanying claims.

In the accompanying drawings:

FIG. 1 is a transverse sectional view of a yarn dyeing apparatus embodying the invention;

FIG. 2 is a sectional view taken on line 11-11 of FIG. 1;

FIG. 3 is a plan view of the dyeing apparatus shown in FIG. 1, with certain parts omitted for clarity;

FIG. 4 is a somewhat schematic axial sectional view of another form of pump embodying the invention; and

FIG. 5 is an enlarged partial axial sectional view corresponding to FIG. 4.

Now, describing the details of this invention with ref erence to the accompanying drawings, in FIGS. 1-3 1 indicates a dye solution tank, 2 the machine frame, 3 a partition plate partitioning the inside of the machine frame to the right and the left sections, 4 yarn hanging rods in the left section, 5 yarn hanging rods in the right section, 6 and 7 the dyed material hung in the right and left sections'of the machine frame, 8 a rotary shaft, 9 the casing of the pump. A plurality of propellers 10 are mounted on said rotary shaft 8 with partition plates 11 in between, but the partition plates 11 may sometimes be provided on the casing 9. The casing 9 is of a cylindrical form and is completely cylindrical in the portions where the peripheries thereof envelop the propellers 10, and in other portions half the periphery thereof being cut oflf alternately for providing the left opening 12 and the right opening 13 for dye solution, respectively. The left opening 12 and the right opening 13, are respectively communicated with the left chamber 14 and the right chamber 15 of dye solution. 16 indicates heaters, 17 bearings, 18 gland bearing, 19 the main bearing, 20 a pulley, and 21 a water discharge valve.

In the construction described above, the dyed materials 6, 7 are hung on the hanger rods 4 provided inside the machine frame 2 freely detachably from the dye solution tank 1, and the dye solution is circulated alternately through the left and right dyed materials 6, 7 and the dyeing of the materials is thereby achieved. In the conventional type of the dyeing machine, however, the casing of the machine has been made to a cylinder with openings on both ends, and which openings communicate with the left and right chambers of dye solution, a rotary shaft has been mounted in the axis of the casing through both dye solution chambers, and a set of propellers (one propeller or propellers in a plurality being mounted in series) has been mounted on said shaft. In such a construction, however, it has not been able to make the opening for communicating the left chamber and the right chamber of dye solution larger than the cross-sectional area of the casing.

Under such circumstance, in the case wherein yarn is being dyed, it is possible to lessen the stagnation of dye solution in the pump and in the dye solution chambers by making the diameters of the propeller or of the casing smaller, but when the diameters are reduced, it will be necessary to increase the speed of rotation of the propellers in order to have the required quantity of the dye solution supplied, and as the result thereof the flow pressure of the dye solution will naturally be increased, and whereby eddy currents being produced, the entanglement of the yarn, and the uneven dyeing of the yarn will result, and in consequence it has been necessitated to employ propellers of larger diameters at a lower speed accompanied with a defect that an excessive amount of dye solution is necessary.

According to the present invention, when the rotary shaft 8 is rotated by the pulley 20 in the positive direction, the right side chamber 15 of dye solution functions as suction and the dye solution flows in at right angle to the rotary shaft 8 through the openings 13 on both sides of the partition plates 11 and then the flow direction being changed in right angle, the dye solution flows into the propellers 10 in the direction of the axis of the rotary shaft 8, and again the flow direction of the dye solution being changed to right angle to the rotary shaft 8, the dye solution flows into the left chamber 14 of dye solution through the opening 12 in the direction opposite to the direction of flowing in. The dye solution, which flows into the left chamber 14 of dye solution, passes through the left side dyed material 6 and collects in the upper part thereof, and thus the dye solution circulates toward right crossing over the upper edge of the partition plate 3 as indicated by an arrow. When the rotation of the rotary shaft 8 is reversed, the dye solution circulates in the direction opposite to said direction.

In the present embodiment, since several sets of pro pellers are mountable on one shaft 8 by having the casing made to a special construction, it is possible to make the casing and the propellers smaller. In consequence, it is possible to economize respective required amounts of water, dye, and fuel, and as the result thereof the cost of dyeing can be cut down, and in addition, since the directions of flow of the dye solution in both sides of the partition plate are reversed, no thrust takes place on the rotary shaft 8, it is not necessary to employ any thrust bearing in the mechanism, which being much simplified in construction.

In the embodiment shown in FIGS. 4 and 5, 8a indicates the rotary shaft, 9a the casing, and on the rotary shaft 8a are mounted propellers 10 in a plurality with partition plates 11 in between. In the casing 9a are provided openings 12, 13 for dye solution on the left and on the right thereof alternately, and these openings 12,, 13 are communicated with the left and the right dye solution chambers, respectively, as in the former embodiment, and on each side of the openings 12, 13 is secured a bent plate 23 with a guide groove 22, respectively. 24 indicates cover plates for maintaining the gaps between the inner periphery of the casing 9a and the outer pe-,

ripheries of the propellers 10 at minimum, and each of which plates is slidably secured by means of a screw 25 to each of the parts of said guide grooves 22, and in addition, flanges 26 are provided in orderto cover the front and the rear peripheries of each propeller 10 with minimum gaps.

In the present embodiment, the cover plates 24 can be installed adjacent to the outer peripheries of the propellers 10 and thereby the gaps between the outer peripheries of the propellers and the inner periphery of the casing being maintained always at minimum, a high efiiciency of the machine, is obtainable in eliminating the ineffectiveness in the circulation of dye solution even when any deformation should occur in the manufacture of the casing or even when any erosion should occur on the rotary shaft.

Although two embodiments according to the present invention have been described hereinabove, the present invention is not to be restricted by the embodiments, but includes all constructions within the scope of the claims accompanying herewith.

What is claimed is:

1. A dye solution circulating apparatus comprising, in combination, a vat; means extending longitudinally up said vat and dividing-the latter intotwo sections, said means including a relatively elongated substantially cylindrical pump casing; a shaft extending axially of said casing and rotatably supported therein; plural propellers mounted on said shaft in axially spaced relation therealong; the cylindrical periphery of said casing being formed with plural, axially spaced openings therein, and axially successive openings communicating with different respective vat sections; there being one propeller between each pair of axially successive openings; and partitions extending diametrically of said casing, each axially intermediate a pair ofpropellers and each centered axially of a respective casing opening; whereby solution drawn from one vat section through a casing opening is divided, by the partition centered in the latter, to flow in opposed axial directions through said casing and out the two openings axiallyon either side of said one opening and into the other, vat section.

2. A dye solution circulating apparatus, as claimed in claim 1, in which casing is closed at each end; each of said casing openings extending circumferentially through substantially one half the peripheral extent of said casing.

3. A dye solution circulating apparatus, as claimed in claim 1, in which said partitions are mounted on said shaft.

4. A dye solution circulating apparatus, as claimed in claim 1, said casing openings being axially contiguous; each propeller being located in a diametric plane common to the axially adjacent ends of a pair of axially successive openings; said casing being formed, at each propeller location, with a radially inwardly extending flange having its inner periphery closely adjacent the periphery of the propeller.

5. A dye solution circulating apparatus, as claimed in claim 4, including channel shape cover plates adjustably secured on each of said. radial flanges and each substantially embracing the periphery of the associated propeller.

References Cited by the Examiner UNITED STATES PATENTS 940,868 11/09 Geissler et a1. 68184 994,016 5/11 Mallison 68l88 1,397,860 11/21 Dudley 68l88 1,959,106 5/34. Messing 230l21 IRVING BUNEVICH, Primary Examiner.

LAURENCE V. EFNER, WALTER A. SCHEEL,

Examiners. 

1. A DYE SOLUTION CIRCULATING APPARATUS COMPRISING, IN COMBINATION, A VAT; MEANS EXTENDING LONGITUDINALLY UP SAID VAT AND DIVIDING THE LATTER INTO TWO SECTIONS, SAID MEANS INCLUDING A RELATIVELY ELONGATED SUBSTANTIALLY CYLINDRICAL PUMP CASING; A SHAFT EXTENDING AXIALLY OF SAID CASING AND ROTATABLY SUPPORTED THEREIN; PLURAL PROPELLERS MOUNTED ON SAID SHAFT IN AXIALLY SPACED RELATION THEREALONG; THE CYLINDRICAL PERIPHERY OF SAID CASING BEING FORMED WITH PLURAL, AXIALLY SPACED OPENINGS THEREIN, AND AXIALLY SUCCESSIVE OPENINGS COMMUNICATING WITH DIFFERENT RESPECTIVE VAT SECTIONS; THERE BEING ONE PROPELLER BETWEEN EACH PAIR OF AXIALLY SUCCESSIVE OPENINGS; AND PARTITIONS EXTENDING DIAMETRICALLY OF SAID CASING, EACH AXIALLY INTERMEDIATE A PAIR OF PROPELLERS AND EACH CENTERED AXIALLY OF A RESPECTIVE CASING OPENING; WHEREBY SOLUTION DRAWN FROM ONE VAT SECTION THROUGH A CASING OPENING IS DIVIDED, BY THE PARTITION CENTERED IN THE LATTER, TO FLOW IN OPPOSED AXIAL DIRECTIONS THROUGH SAID CASING AND OUT THE TWO OPENINGS AXIALLY ON EITHER SIDE OF SAID ONE OPENING AND INTO THE OTHERE VAT SECTION. 